stress differs from heat waves
in degree Celsius (oC), they are not interchangeable. Also, heat stress differs from heat waves, which typically refer to periods of hot weather abnormally deviant from the norm for that period and lasting for a few consecutive days. Southeast Asia is already experiencing more frequent episodes of extreme heat. For the past two years, the region has endured prolonged and record-breaking periods of heat, with air temperatures repeatedly exceeding 40oC. In an extreme example, the Heat Index (HI, another measure of heat stress used by some countries that differs from WBGT in its calculation and applications) exceeded 52oC in Bangkok in April 2024.[5] Between January and early May 2024, 61 people in Bangkok and elsewhere in Thailand perished from heat-related causes, and hundreds more sought hospital care for heat stress; this was nearly double the fatalities from heat in the whole of 2023 ดูหนัง2025